Calculating-machine.



R. EEIN. CALCULATING MACHINE.

APPLICATION FILED MAR. 29, 1909.

Mtented Nov. 2, 1909.

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CALCULATING MACHINE.

APPLICATION FILED MAR, 29, 1909.

Patented Nov. 2, 1909.

I 2 SHBETS-SHEET ,2.

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to their relative lengths. Means are pro- To all whbm'llf maty concernr' REIN, a sub ject of; the.-E-mperor of Germany, and .resi- :dent ofj BerlinyGermany, have invented-a certain new and useful Improvementin Cala specification f 1301mm Rum, o-F BERLIN, GERMANY.

, Be it known that '1, ROBERT lculatingtMach-ines;of which the following is i, ,1 This invention de'. C'olmar, No. 13,504, February 10, 1851, and

in the British patent to Ludwig Spitz, No. 26,296, N0vember 20,1906, to which patents reference maybe had for a more complete exposition of-featur'es not'here'in fully shown and described. c

, The essentiaL-Eeaturesof machines of this general type are, br-iefly, as"fo1lows:" The ,mac'hine includes a plurality. of axially parallelcylinders-known in the art as feed drums lyeach of which is provided periphera'llywitlr a series (usually nine) of paralelel, longitudinal ribs or'elongated gear teeth,

whichare unequal in length and arranged in a step-hke manner progressively according .vided forsimultaneously rotating all of said feed drums through one complete rotation or through somuch thereof as will cause all ofIkthe gear-"teeth of each drum to pass a given point. The machine also includes suitshafts being'connected by suitable transmis- 4 sio'n mechanism with'one' of said indicators,

Mounted on each' 'of said shafts for rotation therewith, but free to be moved longitudinally thereof, is a gear wheel having teeth adapted to mesh with the gear teeth" on the adjacent feed drum. These gear; wheels, from their cooperative relationship with the feed drums .are "conveniently designated feed wheels..The relative arrangement of the feed and feed whee-ls is such that each feed wheel ma; be moved from a position out of reach 0 any'ofthe teeth on the adjacent.feedidrum, knownas the zero I i specifieation of Letters Patent. 1 =Application filed March 29,1909.

I 'relates to 'c'alculating'ma- .chines of the type shown and described in the. Britishzpate'nt to Charles Xavier Thomas NT F CE.

" ,GALGULATING-MAOI-IINE;

Patented'Nov; '2, 1909. serial at. 486,412. 5

in'to afposi'tionto be engaged by any predetermined number of the teeth on the drum when said drum is rotated. The above menportioned that each of said indicators will be moved a number of points corresponding "tojthe .numberof teeth through which its connected feed wheel is turned. For adjusting or setting the feed wheels there is usually provided a series ofsetting slides operating in a series of slots arranged from slots having arranged adjacent .thereto a scale of figures from O to 9. I I To avoid the necessity of manually setting each feed wheel to zero, in machines of this structed which permit the feed wheels to be positively returned to their zero position by."

operation of a single handle.

is to provide a zero adjusting device, which, besides permitting the setting of all the feed wheels to zeroby one hand-movement, will also permit the simultaneous setting to zero ed from right to left, say). Asthe resulting advantage it follows that with repeated calculations it is not necessary to reset to zero also those feed wheels which are already in the required position. y

In accordance with the invention each feed wheel with its setting slide is acted upon by a spring tending to return it to the trolled by a locking gear which is acted upon by the same spring and prevents the return of the wheel until the gear is released by hand.

The release, of the locking gear of any feed wheel is independent of the release of the locking. gear of the preceding feed wheels, while at the same time the following wheels are released sothat any number of simultaneously returned to zero position,

Any desired number of wheels may be simultaneously reset to zero irrespective of their position relatively to the other wheels if a' second releasing gear for the feed wheels is arranged symmetrically to the first in such wise that with said second gear the reposition lorigitudinally' of thefeed drum ti'oned transmission mechanism is so proleft to right in a setting plate, eachof said type, zero adjusting devices have been con-'- 1 "Now, the object of the present invention ofany desired number of feed wheels (countzero position and is at the same. time conwheels counted from leftto right may be lease of each feed wheel is inde endent of 110 the release'of the wheels to its le t (i. 6., the following wheels) but isdependent; on the tails also on enlarged scale. Fig. 7 shows a modified construction of the releasing gear wherein the lever 1s adapted to be moved in two directions. Fig. 8 shows a modified construction of the releasing gear for the feed wheels, comprising slides disposed one behind the other.

The feed wheel. 2 which is as usual slidably mounted on the prismatic shaft 1 and engages with the feed drum 3 according to its position, is adapted to be moved on said shaft by a setting lrnob 4 guided within the slot 5 provided in the frame.

In order to effect an exact adjustment in accordance with the graduated teeth of the feed drum the setting knobs is rigidly connected with a toothed rack '6 engaging with a pinion 7 on the shaft of which is mounted the recorder wheel 8 provided with numerals l to 9. The recorded numeral for the time being is visible through a window 9. A pawl 11 pivoted on a rod 10 within the frame of the machine engages with a ratchet wheel 12 (Figs. 2 and 5) keyed on the pinion shaft adjacent to the pinion 7 or formed in one piece with the latter. The pawl-is held in engagement with the ratchet wheel 12 by a spring 14: connected at one end to the arm 13 of the pawl and at the other end connected-to the rack 6, so that each time the'pinion 7 is turned through one tooth, the pawl is raised and comes into engagement with the next tooth.

Owing to the symmetrical formation of "the pawl face 15 it is possible to move the rack 6 in both directions forward and backward) notwithstanding which a reliable locking effect is obtained, as the pawl is directly acted upon by the spring 14.

It is clear that after the pawl 11 is released from its ratchet wheel 12, the rack 6, the setting knob s, and the feedwheel 2 are returned to zero position-under the action of'the spring 1%. In order to efiect the re lease of the pawls 11 in such manner that by a single movement of the hand either all or any desired number of the pawls ll counted from left to right may be disengaged, the mechanism described below is provided.

Separate shaft sections 16 mounted within the frame of the machine and are provided with recesses 17 (Figs. 3 and 6) engaged by the arms 13 of the pawls 11 under the action of the springs 14:. If one of the sections 16 is rotated, the corresponding arm 13 of a pawl 11, is de- Fig. 2 5

and the others are to remain in p are rotatably wheel 2 is returned to zero position. To

permit the rotation of the shaft sections 16 each of them is provided with a lever 19 having a knob 20, which lever passes through a slot 21 in the frame and can be moved through a definite angle.

Instead of the lever 19 a key 31 may be arranged as shown in dotted lines so that by vertical depression of the same the shaft section 16 connected to said key by a lever 31 is rotated.

The shaft sections are arranged so that when any portion is rotated the following section is also rotated, while the preceding ones remain stationary. For this purpose. the shaft sections '16 are provided at their ends with claws adapted to engage with the claws of the adjacent sections so that an angular clearance 25 (Fig. 4:) is left between the claws "23 of the preceding shaft section and the claw 24 of the following shaft sectionin such manner that when the preceding shaft section, 16 is rotated in the direction of the arrow 26 (Fig. 4) the following shaft section 16 isalso rotated, while, when a following section is rotated in the direction of the arrow 27 the preceding shaft sec tion remains stationary. A spring 28 (Fig. 3) on the last shaft section insures that the edges 29 and 30 of the claws are kept con' tinuously in engagement.

With the arrangement described, the movement of one of the levers 19 and consequent rotation of the shaft section, effects the rotation of all the following sections whereby all the following pawls are disengaged and the feed wheels returned to zero position under the tension of the spring 14:, while all the preceding wheels remain stationary. If, for instance, the three feed wheels at the left end are to be set to zero third knob 20 from the extreme 1 actuated; and so on. If, hows-re. feed wheels are to be returned ne'ously to zero, the first knob on the right is to be operated.

It will be seen that slides with inclined faces disposed behind each other may serve in lieu of the engaging shaft sections 16, to effect the release of the pawls 11, in such wise that when one slide is moved all the slides on the left hand side thereof are also moved while those at the right remain stationary, each slide so moved effecting the release of a pawl.

In the construction shown in Fig 8' the arms 18 of the pawls are depressed by contact with suitably beveled ends 39- of the horizontally movable slides 38, thus effectingthe release of the pawls. The slides are provided with slots '37 which are engaged by as gtides 'lhe movement of I .t ilected by depression of the buttons l i imving wedges 42 which buttons are arranged in the cover of the machine and are normally supported by the springs 43, the beveled faces 41 of which wedges are adapted to engage correspondingly beveled faces l0 of the slides 38, so that the latter are moved laterally.

In the arrangement shown, by the depr sion of ,a button all the slides on the right hand side of the latterfare operated, while those on the left hand side remain inoperative.

il ith the use of a second releasing gear for the pawls ll symmetrically to the first, which second gear may consist oi'shaft sections engaging each other in a manner opposite to that in which the shaft sections 16 are engaged (Fig. 3), any desired number of feed wheels may be returned to zero position, irrespective of their relative position in the machine, by operating both releasing gears simultaneously by means of two knobs,

As the construction is complicated by duplicating the releasing gear forthe pawls,=

the arrangement shown in Fig. 7 may be applied. in this arrangement a single releasing ear such as shown in Figs. 1 to 3 is provideo; the levers 19, however, with their knobs 20 by which the releasing" gear is actu ated, may be moved not only in one direction (arrow 26, Fig. l) but also in the-reverse direction arrow 33. Fig. 'l). When the releasing gear is at rest, the lovers .19 are normally inclined to the horizontal at an angle of approximately 45 and may be moved either upward in the direction of the arrow 33 or downward as indicated by the arrow 32. If the lever is moved as shown by the arrow 32, the release is efi'ected as before described in such manner that all toe following shaft sections on the left hand side/are actuated, but all preceding portions remain stationary. However, if the lever 19 is moved in the direction of the arrows 33,

3e and 35, then all the preceding shaft sections are operated, while all the following sections remain inoperative This will be clear by reference to Fig. 3, when is con sideredthat the left ends of the shafts are name to this specification in the provided withthe claws 23, whereas the right ends are provided with the claws 24. The levers 19 being thus adapted tobe moved in. two directions according to the arrows 32 and 33 permit a resetting to zero with one manual operation of all the feed wheels either on the left hand side of the knob 01.

of all the wheels to the right hand side thereof. Further, it is impossible by operating two knobs, to return all the feed wheels at either side of the knob to zero position while leaving those-between the/two knobs at rest.

Having described my invention what I claim anddesire to secure by Letters Patent of United States is P 1. In a calculating machine, the combinatron with the feed wheels of means for re setting said feed. wheels to zero, devices'for locking said wheels, andmeans operable to setting said feed wheels to zero, devices for locking said wheels, two sets of movable members, the movable members of each set adapted to be operatively connected so that succeeding members of the set are movable together but independently o1 precedingmen bers of the set, and manually operable means for moving any two of said members to release selected locking devices.

- In testimony whereof I have signed my presence of two subscribing witnesses.

' ROBERT REIN.

Witnesses:

HENRY Hasrnn, lVoLonMAR HAUPT. 

